Novel cyclopentanones

Abstract

Novel cyclopentanones of the formula ##STR1## wherein AlK is alkyl of 1 to 4 carbon atoms, R is selected from the group of hydrogen and α-tetrahydropyranyl and the Ys are hydrogen or together represent a double bond with the proviso that when R is hydrogen, the Ys are hydrogen as well as products of the formula ##STR2## wherein AlK is alkyl of 1 to 4 carbon atoms and products of the formula ##STR3## wherein R and AlK have the above definitions which are useful intermediates in the production of prostaglandins.

We claim: 
     
       1. A compound of the formula ##STR30## wherein AlK is alkyl of 1 to 4 carbon atoms, R is selected from the group consisting of hydrogen and α-tetrahydropyranyl and Ys are hydrogen. 
     
     
       2. A compound of claim 1 which is methyl 2-oxo-5-(α-tetrahydropyranyloxymethyl)-cyclopentanecarboxylate. 
     
     
       3. A compound of claim 1 which is methyl 2-oxo-5-hydroxymethyl-cyclopentanecarboxylate.